这个压缩包里的都是超级经典的java例子

				
				
				
				Removing a Column from a JTable Component (Java Developers Almanac Example)
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				The Java Developers Almanac 1.4
				
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				    javax.swing.table
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				  e922. Removing a Column from a JTable Component
				
				To remove a column to a JTable component, the component must use
				a table model that supports this operation.  A simple implementation
				of such a table model is DefaultTableModel.
				
				 DefaultTableModel.removeColumn() removes the visible
				column, but leaves the column data in the table model.  This example
				provides a routine that removes both the visible column and the column
				data.
				
				
				    DefaultTableModel model = new MyDefaultTableModel();
				    JTable table = new JTable(model);
				    table.setModel(model);
				    
				    // Create 3 columns
				    model.addColumn("Col1");
				    model.addColumn("Col2");
				    model.addColumn("Col3");
				    model.addRow(new Object[]{"v1"});
				    
				    // Remove the first visible column without removing the underlying data
				    table.removeColumn(table.getColumnModel().getColumn(0));
				    
				    // Disable autoCreateColumnsFromModel to prevent
				    // the reappearance of columns that have been removed but
				    // whose data is still in the table model
				    table.setAutoCreateColumnsFromModel(false);
				    
				    // Remove the first visible column and its data
				    removeColumnAndData(table, 0);
				    
				    // Remove the last visible column and its data
				    removeColumnAndData(table, table.getColumnCount()-1);
				    
				    // Removes the specified column from the table and the associated
				    // call data from the table model.
				    public void removeColumnAndData(JTable table, int vColIndex) {
				        MyDefaultTableModel model = (MyDefaultTableModel)table.getModel();
				        TableColumn col = table.getColumnModel().getColumn(vColIndex);
				        int columnModelIndex = col.getModelIndex();
				        Vector data = model.getDataVector();
				        Vector colIds = model.getColumnIdentifiers();
				    
				        // Remove the column from the table
				        table.removeColumn(col);
				    
				        // Remove the column header from the table model
				        colIds.removeElementAt(columnModelIndex);
				    
				        // Remove the column data
				        for (int r=0; r<data.size(); r++) {
				            Vector row = (Vector)data.get(r);
				            row.removeElementAt(columnModelIndex);
				        }
				        model.setDataVector(data, colIds);
				    
				        // Correct the model indices in the TableColumn objects
				        // by decrementing those indices that follow the deleted column
				        Enumeration enum = table.getColumnModel().getColumns();
				        for (; enum.hasMoreElements(); ) {
				            TableColumn c = (TableColumn)enum.nextElement();
				            if (c.getModelIndex() >= columnModelIndex) {
				                c.setModelIndex(c.getModelIndex()-1);
				            }
				        }
				        model.fireTableStructureChanged();
				    }
				    
				    // This subclass adds a method to retrieve the columnIdentifiers
				    // which is needed to implement the removal of
				    // column data from the table model
				    class MyDefaultTableModel extends DefaultTableModel {
				        public Vector getColumnIdentifiers() {
				            return columnIdentifiers;
				        }
				    }
				
				
				
				
				             Related Examples
				
				
				
				
				e915. 
				    Converting a Column Index Between the View and Model in a JTable Component
				
				
				
				e916. 
				    Enumerating the Columns in a JTable Component
				
				
				
				e917. 
				    Setting the Width of a Column in a JTable Component
				
				
				
				e918. 
				    Setting the Column Resize Mode of a JTable Component
				
				
				
				e919. 
				    Locking the Width of a Column in a JTable Component
				
				
				
				e920. 
				    Appending a Column to a JTable Component
				
				
				
				e921. 
				    Inserting a Column in a JTable Component
				
				
				
				e923. 
				    Moving a Column in a JTable Component
				
				
				
				e924. 
				    Allowing the User to Move a Column in a JTable Component
				
				
				
				e925. 
				    Allowing the User to Resize a Column in a JTable Component
				
				
				
				
				
				
				
				
				        See also: 
				
				    Cells
				  
				
				
				    Column Heads
				  
				
				
				    Editing
				  
				
				
				    Events
				  
				
				
				    Layout
				  
				
				
				    Rows
				  
				
				
				    Scrolling
				  
				
				
				    Selection
				  
				
				
				    Sorting
				  
				
				
				    Table Model
				  
				
				
				    Tool Tips
				  
				
				
				
				
				
				
				
				
				
				© 2002 Addison-Wesley.